/* header */
.header {
  width: 100%;
}
.header input {
  width: 100%;
  height: 40px;
  box-sizing: border-box;
  color: #333;
  border: 1px solid #dddddd;
  font-size: 16px;
  border-radius: 5px;
  text-indent: 6px;
}
.header input::placeholder {
  color: #999999;
}

.header input:focus {
  outline: none;
  border-color: skyblue;
  box-shadow: 0 0 10px skyblue;
}
